{% if ansible_hostname.startswith("db-fas01") or ansible_hostname.startswith("db01") %}
# This enabled pg-8 compatibility for bytea fields
# Fixes errors with sqlalchemy with binary data when app is on RHEL6 and server is PG9
# Reference: https://bitbucket.org/zzzeek/sqlalchemy/issue/2016/pickletype-does-not-work-with-postgresql
bytea_output = 'escape'
{% endif %}

# -----------------------------     
# PostgreSQL configuration file     
# -----------------------------     
#                                   
# This file consists of lines of the form:
#                                         
#   name = value                          
#                                         
# (The "=" is optional.)  Whitespace may be used.  Comments are introduced with
# "#" anywhere on a line.  The complete list of parameter names and allowed    
# values can be found in the PostgreSQL documentation.                         
#                                                                              
# The commented-out settings shown in this file represent the default values.  
# Re-commenting a setting is NOT sufficient to revert it to the default value; 
# you need to reload the server.                                               
#                                                                              
# This file is read on server startup and when the server receives a SIGHUP    
# signal.  If you edit the file on a running system, you have to SIGHUP the    
# server for the changes to take effect, or use "pg_ctl reload".  Some         
# parameters, which are marked below, require a server shutdown and restart to 
# take effect.                                                                 
#                                                                              
# Any parameter can also be given as a command-line option to the server, e.g.,
# "postgres -c log_connections=on".  Some paramters can be changed at run time 
# with the "SET" SQL command.                                                  
#                                                                              
# Memory units:  kB = kilobytes MB = megabytes GB = gigabytes                  
# Time units:    ms = milliseconds s = seconds min = minutes h = hours d = days


#------------------------------------------------------------------------------
# FILE LOCATIONS                                                               
#------------------------------------------------------------------------------

# The default values of these variables are driven from the -D command-line
# option or PGDATA environment variable, represented here as ConfigDir.    

#data_directory = 'ConfigDir'           # use data in another directory
                                        # (change requires restart)    
#hba_file = 'ConfigDir/pg_hba.conf'     # host-based authentication file
                                        # (change requires restart)     
#ident_file = 'ConfigDir/pg_ident.conf' # ident configuration file      
                                        # (change requires restart)     

# If external_pid_file is not explicitly set, no extra PID file is written.
#external_pid_file = '(none)'           # write an extra PID file          
                                        # (change requires restart)        


#------------------------------------------------------------------------------
# CONNECTIONS AND AUTHENTICATION                                               
#------------------------------------------------------------------------------

# - Connection Settings -

listen_addresses = '*'          # what IP address(es) to listen on;
                                        # comma-separated list of addresses;
                                        # defaults to 'localhost', '*' = all
                                        # (change requires restart)         
port = 5432                             # (change requires restart)         
{% if ansible_hostname.startswith("db-koji") %}
max_connections = 2000                   # (change requires restart)         
{% else %}
max_connections = 750                    # (change requires restart)         
{% endif %}
# Note:  Increasing max_connections costs ~400 bytes of shared memory per   
# connection slot, plus lock space (see max_locks_per_transaction).  You might
# also need to raise shared_buffers to support more connections.              
#superuser_reserved_connections = 3     # (change requires restart)           
#unix_socket_directory = ''             # (change requires restart)           
#unix_socket_group = ''                 # (change requires restart)           
#unix_socket_permissions = 0777         # begin with 0 to use octal notation  
                                        # (change requires restart)           
#bonjour_name = ''                      # defaults to the computer name       
                                        # (change requires restart)           

# - Security and Authentication -

#authentication_timeout = 1min          # 1s-600s
#ssl = off                              # (change requires restart)
#ssl_ciphers = 'ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH'      # allowed SSL ciphers
                                        # (change requires restart)          
#password_encryption = on                                                    
#db_user_namespace = off                                                     

# Kerberos and GSSAPI
#krb_server_keyfile = ''                # (change requires restart)
#krb_srvname = 'postgres'               # (change requires restart, Kerberos only)
#krb_server_hostname = ''               # empty string matches any keytab entry   
                                        # (change requires restart, Kerberos only)
#krb_caseins_users = off                # (change requires restart)               
#krb_realm = ''                         # (change requires restart)               

# - TCP Keepalives -
# see "man 7 tcp" for details

#tcp_keepalives_idle = 0                # TCP_KEEPIDLE, in seconds;
                                        # 0 selects the system default
#tcp_keepalives_interval = 0            # TCP_KEEPINTVL, in seconds;  
                                        # 0 selects the system default
#tcp_keepalives_count = 0               # TCP_KEEPCNT;                
                                        # 0 selects the system default


#------------------------------------------------------------------------------
# RESOURCE USAGE (except WAL)                                                  
#------------------------------------------------------------------------------

# - Memory -

shared_buffers = {{ shared_buffers }}   # min 128kB or max_connections*16kB
                                        # (change requires restart)        
{% if temp_buffers %}
temp_buffers = {{ temp_buffers }}                     # min 800kB
{% else %}
temp_buffers = 32MB                     # min 800kB                        
{% endif %}
#max_prepared_transactions = 5          # can be 0 or more                 
                                        # (change requires restart)        
# Note:  Increasing max_prepared_transactions costs ~600 bytes of shared memory
# per transaction slot, plus lock space (see max_locks_per_transaction).       

# 8 MB is probably on the high side.  We can probably do with 4MB.  But we
# were seeing a problem and we have the RAM so we're going to try this.   
{% if small_postgres_instance %}
work_mem = 4MB
maintenance_work_mem = 1GB              # min 1MB
{% else %}
work_mem = 32MB
maintenance_work_mem = 2GB              # min 1MB
{% endif %}

{% if max_stack_depth %}
max_stack_depth = {{ max_stack_depth }}                  # min 100kB
{% else %}
#max_stack_depth = 2MB                  # min 100kB                       
{% endif %}

# - Free Space Map -

#max_fsm_pages = 6000000                 # min max_fsm_relations*16, 6 bytes each
                                        # (change requires restart)             
#max_fsm_relations = 1000                # min 100, ~70 bytes each               
                                        # (change requires restart)             

# - Kernel Resource Usage -

#max_files_per_process = 1000           # min 25
                                        # (change requires restart)
#shared_preload_libraries = ''          # (change requires restart)

# - Cost-Based Vacuum Delay -

vacuum_cost_delay = 0                   # 0-1000 milliseconds
vacuum_cost_page_hit = 1                # 0-10000 credits    
vacuum_cost_page_miss = 10              # 0-10000 credits    
vacuum_cost_page_dirty = 20             # 0-10000 credits    
vacuum_cost_limit = 200                 # 1-10000 credits    

# - Background Writer -

bgwriter_delay = 200ms                  # 10-10000ms between rounds
bgwriter_lru_maxpages = 400             # 0-1000 max buffers written/round
bgwriter_lru_multiplier = 4.0           # 0-10.0 multipler on buffers scanned/round


#------------------------------------------------------------------------------
# WRITE AHEAD LOG                                                              
#------------------------------------------------------------------------------

# - Settings -

fsync = on                              # turns forced synchronization on or off
synchronous_commit = on                 # immediate fsync at commit             
wal_sync_method = fdatasync             # the default is the first option       
                                        # supported by the operating system:    
                                        #   open_datasync                       
                                        #   fdatasync                           
                                        #   fsync                               
                                        #   fsync_writethrough                  
                                        #   open_sync                           
#full_page_writes = on                  # recover from partial page writes      
wal_buffers = 16MB                      # min 32kB                              
                                        # (change requires restart)             
#wal_writer_delay = 200ms               # 1-10000 milliseconds                  

#commit_delay = 0                       # range 0-100000, in microseconds
#commit_siblings = 5                    # range 1-1000                   

# - Checkpoints -
{% if ansible_distribution != "Fedora" %}
checkpoint_segments = 30                # in logfile segments, min 1, 16MB each
{% endif %}
checkpoint_timeout = 30min              # range 30s-1h                         
checkpoint_completion_target = 0.6      # checkpoint target duration, 0.0 - 1.0
checkpoint_warning = 180s               # 0 is off                             

# - Archiving -

#archive_mode = off             # allows archiving to be done
                                # (change requires restart)  
#archive_command = ''           # command to use to archive a logfile segment
#archive_timeout = 0            # force a logfile segment switch after this  
                                # time; 0 is off                             


#------------------------------------------------------------------------------
# QUERY TUNING                                                                 
#------------------------------------------------------------------------------

# - Planner Method Configuration -

#enable_bitmapscan = on
#enable_hashagg = on   
#enable_hashjoin = on  
#enable_indexscan = on 
#enable_mergejoin = on 
#enable_nestloop = on  
#enable_seqscan = on   
#enable_sort = on      
#enable_tidscan = on   

# - Planner Cost Constants -

#seq_page_cost = 1.0                    # measured on an arbitrary scale
random_page_cost = 1.1                  # same scale as above           
#cpu_tuple_cost = 0.01                  # same scale as above           
#cpu_index_tuple_cost = 0.005           # same scale as above           
#cpu_operator_cost = 0.0025             # same scale as above           
{% if effective_cache_size %}
effective_cache_size = {{ effective_cache_size }}
{% endif %}

# - Genetic Query Optimizer -

#geqo = on
#geqo_threshold = 12
#geqo_effort = 5                        # range 1-10
#geqo_pool_size = 0                     # selects default based on effort
#geqo_generations = 0                   # selects default based on effort
#geqo_selection_bias = 2.0              # range 1.5-2.0                  

# - Other Planner Options -

default_statistics_target = 100         # range 1-1000
#constraint_exclusion = off                           
#from_collapse_limit = 8                              
#join_collapse_limit = 8                # 1 disables collapsing of explicit 
                                        # JOIN clauses                      


#------------------------------------------------------------------------------
# ERROR REPORTING AND LOGGING                                                  
#------------------------------------------------------------------------------

# - Where to Log -

log_destination = 'stderr'              # Valid values are combinations of
                                        # stderr, csvlog, syslog and eventlog,
                                        # depending on platform.  csvlog      
                                        # requires logging_collector to be on.

# This is used when logging to stderr:
logging_collector = on                  # Enable capturing of stderr and csvlog
                                        # into log files. Required to be on for
                                        # csvlogs.                             
                                        # (change requires restart)            

# These are only used if logging_collector is on:
log_directory = 'pg_log'                # directory where log files are written,
                                        # can be absolute or relative to PGDATA 
#log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log'        # log file name pattern,
                                        # can include strftime() escapes        
log_truncate_on_rotation = on           # If on, an existing log file of the    
                                        # same name as the new log file will be 
                                        # truncated rather than appended to.    
                                        # But such truncation only occurs on    
                                        # time-driven rotation, not on restarts 
                                        # or size-driven rotation.  Default is  
                                        # off, meaning append to existing files 
                                        # in all cases.                         
log_rotation_age = 1d                   # Automatic rotation of logfiles will   
                                        # happen after that time.  0 to disable.
log_rotation_size = 10000               # Automatic rotation of logfiles will   
                                        # happen after that much log output.    
                                        # 0 to disable.                         

# These are relevant when logging to syslog:
#syslog_facility = 'LOCAL0'                 
#syslog_ident = 'postgres'                  


# - When to Log -

#client_min_messages = notice           # values in order of decreasing detail:
                                        #   debug5                             
                                        #   debug4                             
                                        #   debug3                             
                                        #   debug2                             
                                        #   debug1                             
                                        #   log                                
                                        #   notice                             
                                        #   warning                            
                                        #   error                              

#log_min_messages = notice              # values in order of decreasing detail:
                                        #   debug5                             
                                        #   debug4                             
                                        #   debug3                             
                                        #   debug2                             
                                        #   debug1                             
                                        #   info                               
                                        #   notice                             
                                        #   warning                            
                                        #   error                              
                                        #   log                                
                                        #   fatal                              
                                        #   panic                              

#log_error_verbosity = default          # terse, default, or verbose messages

#log_min_error_statement = error        # values in order of decreasing detail:
                                        #   debug5                             
                                        #   debug4                             
                                        #   debug3                             
                                        #   debug2                             
                                        #   debug1                             
                                        #   info                               
                                        #   notice                             
                                        #   warning                            
                                        #   error                              
                                        #   log                                
                                        #   fatal                              
                                        #   panic (effectively off)            

log_min_duration_statement = 10000      # -1 is disabled, 0 logs all statements
                                        # and their durations, > 0 logs only   
                                        # statements running at least this time.

#silent_mode = off                      # DO NOT USE without syslog or
                                        # logging_collector           
                                        # (change requires restart)   

# - What to Log -

#debug_print_parse = off
#debug_print_rewritten = off
#debug_print_plan = off     
#debug_pretty_print = off   
log_checkpoints = on        
#log_connections = off      
#log_disconnections = off   
#log_duration = off         
#log_hostname = off         
#log_line_prefix = ''                   # special values:
                                        #   %u = user name
                                        #   %d = database name
                                        #   %r = remote host and port
                                        #   %h = remote host         
                                        #   %p = process ID          
                                        #   %t = timestamp without milliseconds
                                        #   %m = timestamp with milliseconds   
                                        #   %i = command tag                   
                                        #   %c = session ID                    
                                        #   %l = session line number           
                                        #   %s = session start timestamp       
                                        #   %v = virtual transaction ID        
                                        #   %x = transaction ID (0 if none)    
                                        #   %q = stop here in non-session      
                                        #        processes                     
                                        #   %% = '%'                           
                                        # e.g. '<%u%%%d> '                     
log_lock_waits = on                     # log lock waits >= deadlock_timeout   
#log_statement = 'all'                  # none, ddl, mod, all                  
log_temp_files = 0                      # log temporary files equal or larger  
                                        # than specified size;                 
                                        # -1 disables, 0 logs all temp files   
#log_timezone = unknown                 # actually, defaults to TZ environment 
                                        # setting                              


#------------------------------------------------------------------------------
# RUNTIME STATISTICS                                                           
#------------------------------------------------------------------------------

# - Query/Index Statistics Collector -

track_activities = on
track_counts = on    
update_process_title = on


# - Statistics Monitoring -

#log_parser_stats = off
#log_planner_stats = off
#log_executor_stats = off
#log_statement_stats = off


#------------------------------------------------------------------------------
# AUTOVACUUM PARAMETERS                                                        
#------------------------------------------------------------------------------

autovacuum = on                 # Enable autovacuum subprocess?  'on' 
                                        # requires track_counts to also be on.
log_autovacuum_min_duration = -1        # -1 disables, 0 logs all actions and 
                                        # their durations, > 0 logs only      
                                        # actions running at least that time. 
autovacuum_max_workers = 3              # max number of autovacuum subprocesses
autovacuum_naptime = 1min               # time between autovacuum runs         
autovacuum_vacuum_threshold = 50        # min number of row updates before     
                                        # vacuum                               
autovacuum_analyze_threshold = 50       # min number of row updates before     
                                        # analyze                              
autovacuum_vacuum_scale_factor = 0.1    # fraction of table size before vacuum 
autovacuum_analyze_scale_factor = 0.1   # fraction of table size before analyze
autovacuum_freeze_max_age = 300000000   # maximum XID age before forced vacuum 
                                        # (change requires restart)            
autovacuum_vacuum_cost_delay = 20       # default vacuum cost delay for        
                                        # autovacuum, -1 means use             
                                        # vacuum_cost_delay                    
autovacuum_vacuum_cost_limit = -1       # default vacuum cost limit for        
                                        # autovacuum, -1 means use             
                                        # vacuum_cost_limit                    


#------------------------------------------------------------------------------
# CLIENT CONNECTION DEFAULTS                                                   
#------------------------------------------------------------------------------

# - Statement Behavior -

#search_path = '"$user",public'         # schema names
#default_tablespace = ''                # a tablespace name, '' uses the default
#temp_tablespaces = ''                  # a list of tablespace names, '' uses   
                                        # only default tablespace               
#check_function_bodies = on                                                     
#default_transaction_isolation = 'read committed'                               
#default_transaction_read_only = off                                            
#session_replication_role = 'origin'                                            
#statement_timeout = 0                  # 0 is disabled                         
#vacuum_freeze_min_age = 100000000                                              
#xmlbinary = 'base64'                                                           
#xmloption = 'content'                                                          

# - Locale and Formatting -

datestyle = 'iso, mdy'
#timezone = unknown                     # actually, defaults to TZ environment
                                        # setting                             
#timezone_abbreviations = 'Default'     # Select the set of available time zone
                                        # abbreviations.  Currently, there are 
                                        #   Default                            
                                        #   Australia                          
                                        #   India                              
                                        # You can create your own file in      
                                        # share/timezonesets/.                 
#extra_float_digits = 0                 # min -15, max 2                       
#client_encoding = sql_ascii            # actually, defaults to database       
                                        # encoding                             

# These settings are initialized by initdb, but they can be changed.
lc_messages = 'en_US.UTF-8'                     # locale for system error message
                                        # strings                                
lc_monetary = 'en_US.UTF-8'                     # locale for monetary formatting 
lc_numeric = 'en_US.UTF-8'                      # locale for number formatting   
lc_time = 'en_US.UTF-8'                         # locale for time formatting     

# default configuration for text search
default_text_search_config = 'pg_catalog.english'

# - Other Defaults -

#explain_pretty_print = on
#dynamic_library_path = '$libdir'
#local_preload_libraries = ''


#------------------------------------------------------------------------------
# LOCK MANAGEMENT
#------------------------------------------------------------------------------

#deadlock_timeout = 1s
#max_locks_per_transaction = 64         # min 10
                                        # (change requires restart)
# Note:  Each lock table slot uses ~270 bytes of shared memory, and there are
# max_locks_per_transaction * (max_connections + max_prepared_transactions)
# lock table slots.


#------------------------------------------------------------------------------
# VERSION/PLATFORM COMPATIBILITY
#------------------------------------------------------------------------------

# - Previous PostgreSQL Versions -

#add_missing_from = off
#array_nulls = on
#backslash_quote = safe_encoding        # on, off, or safe_encoding
#default_with_oids = off
#escape_string_warning = on
#regex_flavor = advanced                # advanced, extended, or basic
#sql_inheritance = on
#standard_conforming_strings = off
#synchronize_seqscans = on

# - Other Platforms and Clients -

#transform_null_equals = off


#------------------------------------------------------------------------------
# CUSTOMIZED OPTIONS
#------------------------------------------------------------------------------

#custom_variable_classes = ''           # list of custom variable class names
#
# Number of concurrent i/o operations at the same time. The default is 1.
effective_io_concurrency = 1

{% if ansible_hostname.startswith("db-koji01") %}
wal_level = 'hot_standby'
max_wal_senders = 10
wal_keep_segments = 100
{% elif ansible_hostname.startswith("db-koji02") %}
hot_standby = on
hot_standby_feedback = on
max_standby_streaming_delay = -1
{% endif %}
